I am sorry you are going through this. It must be frustrating. Sudden numbness and weakness on one side generally indicates some sort of stroke. Usually though you get very dizzy or light headed. BUT you had a CT scan which normally will show this. Maybe you can see your PCP and request an MRI.
I hope everything works out for you.
Something similar happened to me last Saturday afternoon...All I can say is I felt WEIRD and couldnt think quite right. I had no numbness, weakness, etc. and if I really thought I could come up with the right answer. Checked my BP and it was REALLY high for me averaging 170/110. I am hypertensive by am very well controlled averaging 110/60. I did take my meds that day, took no other type of medication, no ETOH, etc.
By the time I got to the ER (after about 4hours) my BP was down to 140/90 (still quite high for me). Cat Scan done...no acute findings. ER was not very concerned. Went to a neurologist on Monday and had a carotid ultrasound that day. The tech did say I had irregular flow velocity but everything else clear. Had an MRI with and without contrast on Wednesday and everything normal. The ultrasound report said nothing about the irregular flow...the neurologist didnt know what to think. Did the confused feeling come first causing the elevated BP, or did the BP come first. Again didnt seem very concerned. Will see my PC tomorrow. She is young and pretty sharp. She wanted to see me when the ER sent her my stuff. We'll see what she has to say. Cant find much on the internet about irregular flow velocity (at least that I can understand). So I am hoping not a TIA. BP has been great/low since then so WHAT happened. Kind of scary. As bad as it is it is still frustrating not to have a diagnosis...just take aspirin.
Good luck to you.
In many hospitals a CT scan may be available on weekends while an MRI may not, so they probably did the best they could. An MRI is less hazardous and more accurate. Yes, you need an MRI. The fact that your neck has been hurting bothers me. It suggests carotid involvement. You certainly need an ultrasound. You have a project tomorrow other than going to work.